Alfaromeoguy
Alfaromeoguy Reader
5/20/19 7:21 p.m.

Tube type.  .875 o.d. wall thickness  of.0285, any idea here? Thanks

ChasH
ChasH New Reader
5/20/19 11:01 p.m.

Your friendly local machine shop can make them. Have you looked at hollow dowel pins?

Indy-Guy
Indy-Guy UberDork
5/21/19 6:12 a.m.

McMaster Carr.

Wonderful search function on their site.

Alfaromeoguy
Alfaromeoguy Reader
5/22/19 1:13 a.m.

Tryed looking at mc masters, nothing there I could use,and a machine shop $$$$. This is for my panhard system. The pin on top of my axle  is .81885. And cannot remove it. Closest rod end  I could fine is 7/8 inch

 

akylekoz
akylekoz Dork
5/22/19 5:25 a.m.

Try Douglas stamping, but call them their web site sucks.

https://dougstampco.com/ 

https://dougstampco.com/washod.html

https://dougstampco.com/mwashid.html

Misumi has almost everything, good website but it takes practice.

https://us.misumi-ec.com/vona2/detail/110100167040/?Inch=0&curSearch=%7b"field"%3a"%40search"%2c"seriesCode"%3a"110100167040"%2c"innerCode"%3a""%2c"sort"%3a1%2c"specSortFlag"

Sorry I should have posted this two days ago but I was busy.

 

Knurled.
Knurled. MegaDork
5/22/19 5:25 a.m.

In reply to Alfaromeoguy :

I had a similar problem.  Don't search for shim stock, search for tube.  I found some bronze tube that was the correct OD and close to the correct ID, and I corrected the ID via quality time spent with a file.  I chose bronze because it's easier to file.  It sees no load, it is just a placeholder until you tighten the bolt/nut down.

 

IIRC I was trying to fit a 16mm thread bolt in an 18mm diameter hole, trying to use a Chevy LS harmonic damper bolt as the stud that my Mazda Watts linkage attached to.  Still works just fine.

Knurled.
Knurled. MegaDork
5/22/19 5:32 a.m.

McMaster has .777" ID bronze for $20/foot or .805 ID steel for $9/foot.  You could take up the rest of the slack with some quality file work and be done.

 

I'm assuming that 21mm ID rod ends don't exist, or are frightfully expensive if they do.  It's better to adapt to a cheap rod end anyway, as they're a regular replacement item.

 

While you're ordering from McMaster, order some cheap thickwall tube that is .875 ID, and use that to make the spacers on either side of the rod end that the nut will torque against.  They will be able to ride on the inner spacer.  I first saw this setup on a car someone else built and liked the idea so much that I stole it.

akylekoz
akylekoz Dork
5/22/19 5:39 a.m.

How thick do you need, we have O.D. and wall thickness, what is the thickness of the shim?

Jumper K Balls (Trent)
Jumper K Balls (Trent) PowerDork
5/22/19 9:37 a.m.

Get two of these high misalignment spacers

Then have them drilled to 21mm. That is the size of the stud on an Alfa Axle. They will take up some of the excess shaft length you need to deal with.

 

Alternatively, I would cut the stud off, then drill and tap the boss for whatever size I needed to use. It is a thick chunk of steel right there.

Also, Are you sure you want the rear roll center at that height? I tend to mount Panhard rods at the axle centerline to keep the roll center there.

Alfaromeoguy
Alfaromeoguy Reader
5/22/19 12:21 p.m.

Trent, this is just a pick up for the diff.angle setting, the bar at rest will be level with centre of the axle

llysgennad
llysgennad Reader
5/22/19 2:04 p.m.

GRM solution: 

Go to the nearest Home Depot/whatever, find the plumbing aisle.

Pick up a black pipe nipple, 3/4" NPT x 6" (or whatever length you need after slicing off the threads). Cut to length

Polish off the outside til it fits a 1" rod end

Slather with grease, install.

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